int ledMerah = 2;
int ledKuning = 3;

unsigned long intervalMerahNyala = 3000;
unsigned long intervalMerahMati = 3000;  
unsigned long intervalKuningNyala = 5000;
unsigned long intervalKuningMati = 8000;

unsigned long previousMillisMerah = 0;
unsigned long previousMillisKuning = 0;

bool ledMerahStatus = LOW;
bool ledKuningStatus = LOW;

void setup() {
  // put your setup code here, to run once:
  pinMode(ledMerah, OUTPUT);
  pinMode(ledKuning, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  unsigned long currentMillis = millis();

  if (ledMerahStatus == HIGH && currentMillis - previousMillisMerah >= intervalMerahNyala) {
    ledMerahStatus = LOW;
    previousMillisMerah = currentMillis;
    digitalWrite(ledMerah, LOW);
  }
  else if (ledMerahStatus == LOW && currentMillis - previousMillisMerah >= intervalMerahMati) {
    ledMerahStatus = HIGH;
    previousMillisMerah = currentMillis;
    digitalWrite(ledMerah, HIGH);
  }

  if (ledKuningStatus == HIGH && currentMillis - previousMillisKuning >= intervalKuningNyala) {
    ledKuningStatus = LOW;
    previousMillisKuning = currentMillis;
    digitalWrite(ledKuning, LOW);
  }
  else if (ledKuningStatus == LOW && currentMillis - previousMillisKuning >= intervalKuningMati) {
    ledKuningStatus = HIGH;
    previousMillisKuning = currentMillis;
    digitalWrite(ledKuning, HIGH);
  }
}